Product Overview
Key Features
- High Toughness Nylon Material
Modified reinforced nylon with excellent shock absorption, far quieter than all-metal gears; effectively reduces gear grinding noise during riding.
- Perfect OEM Size Matching
1:1 original mold production, accurate tooth pitch and dimension, no modification required for direct installation on Bafang M820 motor gearbox.
- Strong Wear & Impact Resistance
Anti-fatigue structure, withstand frequent high-torque output under climbing and heavy load conditions, extend motor service life.
- Easy DIY Repair
Standard replacement accessory, compatible with all stock Bafang M820 mid drive motor assemblies; fits stock motor housing without extra machining.
- Effective Vibration Buffer
Absorb sudden torque impact when starting or accelerating, prevent metal driving gear from rapid abrasion and damage.
Compatibility Notice
- Only compatible with Bafang M820 mid drive torque motor
- Not suitable for M410/M510/M560/M600/M630 series motors
- Fits stock e-bike frames equipped with Bafang M820 factory motor kits
Common Applicable Scenarios
- Original gear cracked, broken or tooth worn out
- Abnormal grinding noise from motor gearbox
- Stuck, unsmooth pedal assist output
- Motor stalling under heavy climbing load










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